Clock/Timing

Clock/Timing

Clock Timing covers the parts that keep a system synchronized: crystal oscillators, clock generators, jitter cleaners, PLLs, buffers, dividers, and real-time clocks. Some designs only need a simple 25 MHz oscillator to drive an MCU, while others depend on a low-jitter clock tree for Ethernet, SerDes, RF, or data converter timing. These parts show up everywhere, from industrial controllers and network switches to medical devices, telecom line cards, and automotive modules. When buyers source clock timing components, the first thing they usually check is frequency stability and jitter, because a cheaper part with worse phase noise can force a redesign later. Package matters too. A lot of engineers still prefer standard SMD packages like 3225 or 5032 for oscillators, but smaller designs keep pushing toward tighter footprints and lower current draw. Supply is the other big issue. Active clock ICs from major brands can go on allocation without much warning, and older RTC or buffer part numbers sometimes drift into last-time-buy status while production is still running. That is where the trade-off usually shows up: pay more for a branded, traceable part now, or gamble on a gray-market offer and risk inconsistent date codes, poor storage, or outright counterfeit stock. For procurement teams, packaging preference is not a small detail either. Tape-and-reel is fine for production, but many repair and NPI builds still need cut tape or small quantities with proper labels and handling. If you are comparing clock timing parts, it helps to send the exact part number, required quantity, target date code, and whether alternates are acceptable. For current stock, lead time, or a quote, check availability at icxing.com.

Frequently Asked Questions

How do I know if a clock timing part is genuine when buying from the open market?

Ask for photos of the label, reel, and lot or date code before placing the order. For timing ICs and oscillators, inconsistent markings and mixed date codes are common warning signs, especially on older or allocated part numbers. Buying through a distributor that can provide traceability lowers that risk.

What specs matter most when comparing oscillators and clock generators?

Start with frequency, stability over temperature, supply voltage, output type, and jitter. For simple MCU clocks, basic stability may be enough, but Ethernet, FPGA, and RF designs often need much tighter phase noise performance. The right part depends on the system budget, not just the headline frequency.

Why do clock timing lead times vary so much between similar part numbers?

Small differences in package, temperature range, frequency option, or output format can turn a common part into a factory-order item. Standard frequencies and popular SMD packages usually move faster, while custom or legacy options may carry long lead times. If your build is urgent, ask about approved alternates early.

Image Part Manufacturer Description Stock Action
9DBV0441AKILFT Intersil (Renesas Electronics Corporation)
IC CLOCK BUFFER
1,600
In-stock
Inquiry
9DBL0455NLGI8 Intersil (Renesas Electronics Corporation)
VFQFPN 4.00X4.00X1.00 ...
4,660
In-stock
Inquiry
9DBU0431AKLF Intersil (Renesas Electronics Corporation)
IC BUFFER 4OUTPUT...
3,490
In-stock
Inquiry
9DBU0441AKLF Intersil (Renesas Electronics Corporation)
IC BUFFER 4OUTPUT...
2,490
In-stock
Inquiry
9DBU0541AKLF Intersil (Renesas Electronics Corporation)
IC BUFFER 5OUTPUT...
7,980
In-stock
Inquiry
9DMU0131AKILF Intersil (Renesas Electronics Corporation)
IC MUX PCIE 2:1 1.5V...
3,440
In-stock
Inquiry
9DMU0141AKILF Intersil (Renesas Electronics Corporation)
IC MUX PCIE 2:1 1.5V...
6,240
In-stock
Inquiry
9DBL0651BKILF Intersil (Renesas Electronics Corporation)
CLOCK BUFFER 3.3V ...
5,900
In-stock
Inquiry
9DBV0731AKILF Intersil (Renesas Electronics Corporation)
VFQFPN 5.00X5.00X0.90 ...
2,770
In-stock
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9DBL06P1B000KILF Intersil (Renesas Electronics Corporation)
VFQFPN 5.00X5.00X0.90 ...
2,170
In-stock
Inquiry
5V41065PGGI Intersil (Renesas Electronics Corporation)
IC CLOCK SYNTHES...
1,540
In-stock
Inquiry
9FGL06P1B000KILFT Intersil (Renesas Electronics Corporation)
IC CLOCK GENERAT...
2,950
In-stock
Inquiry
9FGV0831CKLF Intersil (Renesas Electronics Corporation)
IC CLOCK GENERAT...
6,880
In-stock
Inquiry
557GI-05ALFT Intersil (Renesas Electronics Corporation)
IC CLK SOURCE QUA...
3,560
In-stock
Inquiry
5V41066PGGI8 Intersil (Renesas Electronics Corporation)
IC CLK GEN SPRED ...
3,140
In-stock
Inquiry
5V41236PGGI8 Intersil (Renesas Electronics Corporation)
IC CLK GEN SPRED ...
4,020
In-stock
Inquiry
9DML0441AKILFT Intersil (Renesas Electronics Corporation)
IC CLOCK PCIE 24VF...
6,790
In-stock
Inquiry
9DML0451AKILFT Intersil (Renesas Electronics Corporation)
IC CLOCK PCIE 24VF...
3,850
In-stock
Inquiry
9DBL08P1B000KILFT Intersil (Renesas Electronics Corporation)
VFQFPN 6.00X6.00X0.90 ...
4,880
In-stock
Inquiry
9DBV0941AKILFT Intersil (Renesas Electronics Corporation)
VFQFPN 6.00X6.00X0.90 ...
4,840
In-stock
Inquiry